Knife edged Livebearer
The Knife edged Livebearer (Alfaro cultratus), is sometimes called Knife livebearer and is found around Costa Rica, Nicaragua and Panama.
On average this fish will grow to 8cm in length and lives in rivers, streams and ditches. There has been good success with breeding in the home aquarium and are livebearers as the name suggests.
This fish has a similar shape to the platy and is quite quarrelsome with its own kind. In general it is a good idea if males outnumber females to prevent fighting amongst themselves. The Knife edged Livebearer is happy in a planted aquarium and in a species only tank. Although this is not essential.
The Knife edged livebearer will eat flake, frozen and live foods and have been known to jump out of the water. To prevent this a tight fitting cover should be fitted to the aquarium.